对于离散卷积方程组，一般采用傅氏变换的方法求解，但在某些特定系数的情况下，零频率丢失。

For discrete convolution equation set, generally, people use Fourier transform method to solve. But in some positions, zero frequency will lose.

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给出非线性方程的二阶向后差分格式稳定性、误差估计。 （4）给出二阶卷积积分的权重。

Given the stability, error estimate and numerical experiments for the nonlinear equation of second order backward difference(4)Given the weighted of second order convolution quadrature.

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在分析基于卷积码的快速相关攻击算法时，提出了快速排序匹配索引算法，用以寻找重量较小的一致校验方程。

This paper describes a new method of fast arranging and matching and indexing for fast correlation attacks based on convolutional codes.

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在分析基于卷积码的快速相关攻击算法时，提出了快速排序匹配索引算法，用以寻找重量较小的一致校验方程。

This paper describes a new method of fast arranging and matching and indexing for fast correlation attacks based on convolutional codes.

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